This alert expired on 13 June 2026 at 01:15 UTC. It is kept here as a record.
It is the 12th strongest of the 220 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 12 at 8:35PM EDT until June 12 at 9:15PM EDT by NWS Mount Holly NJ
An estimated 1,749,687 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 27, 2026 · score 52 · 4.0 km
- March 17, 2026 · score 52 · 6.4 km
- June 6, 2026 · score 52 · 6.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 38.9717, -76.3535 |
| Nearest City | Annapolis (12 km) |
| Population Exposed | 1.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-13T00:35:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ac0b40fae82717b6d6025118c57b6489 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kent, MD; Queen Anne's, MD; Talbot, MD; Anne Arundel, MD |
| Headline | Severe Thunderstorm Warning issued June 12 at 8:35PM EDT until June 12 at 9:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-12T21:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ac0b40fae82717b6d6025118c57b648970e7ec6c.001.1","noaa_urn:oid:2.49.0.1.840.0.41192d05dcc8b0a01bfab49a49f0d9853b8ea02b.002.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 52/100, near Annapolis (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.